SINGLE LENS REFLEX CAMERA

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Description

Number of patent applications / Date published

396354000

SINGLE LENS REFLEX CAMERA

36

20080310833

Imaging apparatus - An imaging apparatus is disclosed. The apparatus includes: (a) an imaging device subunit having an imaging device for creating an image signal associated with a subject and a light-transmitting member mounted ahead of a photosensitive surface of the imaging device; (b) a first driver circuit for driving a first actuator that moves the imaging device subunit in a first direction; (c) a second driver circuit for driving a second actuator that moves the imaging device subunit in a second direction substantially perpendicular to the first direction; and (d) first dust-removing means for shaking off dust adhering to the light-transmitting member by driving a given actuator so as to vibrate the light-transmitting member; wherein the given actuator is driven using the first driver circuit or the second driver circuit.

12-18-2008

20090110387

IMAGING DEVICE - An imaging device includes an imaging unit; a display unit; an electronic finder unit that performs preview display before actual shooting based on image signals successively generated by the imaging unit; an optical finder unit having a finder window; an optical-path switching unit that performs switching between a first optical path through which light from a subject is guided to the finder window and a second optical path through which the light is guided to the imaging unit; an eye detecting unit that detects presence of an eye in a proximity of the finder window; a first control unit that performs a first control operation so that the optical-path switching unit selects the first optical path upon detection of an eye; and a second control unit that performs a second control operation so that the optical-path switching unit selects the second optical path upon non-detection of an eye.

SINGLE-LENS REFLEX CAMERA USING PHASE DIFFERENCE DETECTION METHOD - A single-reflex camera includes a mirror box, and a focus detecting unit. The mirror box further includes a first opening on a side of the image-pickup optical system, which the light flux that has passed the image-pickup optical system enters, and a bottom plate arranged between the mirror and the focus detecting unit, the bottom plate including a plate-shaped front part that extends so as to approach to an optical axis of the image-pickup optical system from the first opening. Part of the condenser lens is located on a side of the optical axis of the image-pickup optical system with respect to a line that is made by extending, parallel to the optical axis of the image-pickup optical system, an end of the first opening on a side of the bottom plate.

05-24-2012

396357000

Having focal plane shutter

3

20150043900

SHUTTER APPARATUS AND IMAGE PICKUP APPARATUS - A shutter apparatus includes a blade member, a blade moving member, a locking member, a cam member, and a restriction member. The cam member moves the locking member from the locking position to the non-locking position so that the blade moving member moves from the closing position to the opening position. The restriction member moves from the non-restriction position to the restriction position after the blade moving member moves from the closing position to the opening position. The cam member moves the locking member in a direction opposite to a direction from the non-locking position to the locking position so that the locking member moves the restriction member from the restriction position to the non-restriction position.

02-12-2015

20120128343

IMAGING APPARATUS - After a first cam bear has unlocked a blade lever, a second cam gear is driven from a mirror-down position to a mirror-up position. Accordingly, a first blade and a second blade are driven in a direction of opening an aperture by an urging force of a blade return spring before a mirror starts a mirror-up operation.

05-24-2012

20130202282

IMAGE PICKUP APPARATUS - After a shutter drive motor drives a shutter to a holding mode, if a first determination unit determines that a mirror is not ready to move to a mirror up mode, a control unit switches the shutter drive motor to a first braking mode. After the shutter drive motor is switched to the first braking mode, if the first determination unit determines that a mirror is ready to move to the mirror up mode before a second determination unit determines that the shutter drive motor is to be switched to a second braking mode, the control unit switches the shutter drive motor to an open mode until a predetermined period of time has elapsed since the first determination unit determined that the mirror was ready to move to a mirror up mode.

08-08-2013

396358000

With mirror support or drive

29

20150037023

CAMERA, CONTROL APPARATUS FOR CAM DRIVE MECHANISM AND CONTROL METHOD FOR CAM DRIVE MECHANISM - A camera having a mirror drive mechanism, for rotating a movable mirror, includes a slider supported on a side of the movable mirror to be linearly movable in a vertical direction corresponding to an up-and-down rotation of the movable mirror, the slider including a cam follower; an end-face cam member positioned above a mirror up-and-down pivot, about which the movable mirror pivots, to be rotatable about a vertical rotational shaft, a cam follower provided on the slider is in contact with the end-face cam member so that the end-face cam member changes a vertical position of the slider via an end-face cam and the cam follower by rotating; and an end-face cam driver.

02-05-2015

20130308935

IMAGE-PICKUP APPARATUS - An image-pickup apparatus includes a lead screw, a moving member, an image-pickup element, a mirror member that is capable of rotating between a first state and a second state, an urging member, and a first abutment member configured to abut against the mirror member when the mirror member is in the first state. An engagement portion parallel to a rotational axis of the mirror member is protruded from the mirror member. The engagement portion is held by both ends of the urging member when the mirror member rotates between the first state and the second state. A first end of the urging member elastically deforms so as to be apart from the engagement portion when the mirror member abuts against the first abutment member.

11-21-2013

20150043901

DRIVE MECHANISM FOR MOVABLE MIRROR OF CAMERA - A camera movable-mirror drive mechanism includes a first shock-absorbing member, pushed by a main-mirror support member to absorb shock when the main-mirror support member rotates to a viewfinder light-guiding position; a second shock-absorbing member, pushed by the main-mirror support member when the main-mirror support member rotates to the retracted position; and a third shock-absorbing member, pushed by a sub-mirror support member to absorb shock when the sub-mirror support member rotates to a jutting position with rotation of the main-mirror support member to the viewfinder light-guiding position. When the main-mirror support member and the sub-mirror support member are in the viewfinder light-guiding position and the jutting-out position, respectively, the first shock-absorbing member is held by the second shock-absorbing member and does not contact the main-mirror support member and the third shock-absorbing member is held by the first shock-absorbing member and does not contact the sub-mirror support member.

02-12-2015

20090245779

Mirror moving device and imaging apparatus - A mirror moving device has a mirror configured to change an optical path of an imaging apparatus. The device includes a movable unit having the mirror, a moving mechanism capable of changing an orientation of the mirror between a first position and a second position, and a positioning member configured to be in contact with a predetermined region of the movable unit when the mirror is made to be in the first position, whereby the mirror is positioned in the first position. The predetermined region and the positioning member are magnetic bodies, at least one thereof being magnetized as a permanent magnet. A magnetic attraction acting between the predetermined region and the positioning member when the mirror is in the first position is smaller than a motive force acting on the predetermined region when the mirror in the first position is moved so as to be in the second position.

10-01-2009

20090110388

ELECTROMAGNETIC ACTUATOR - An electromagnetic actuator is provided, including a bobbin made of a non-magnetic material including a hollow cylindrical portion and disk flanges; a coil formed between the disk flanges; a power supply which supplies a current to the coil; a movable member pivoted on the hollow cylindrical portion; and a stationary member made of a permanent magnet and fixed to a disk flange. The movable member is a magnetic material and includes a shaft portion and a rotating portion. The rotating portion is fixed to the shaft portion, lies on the disk flange, and extends in a radial direction of the shaft portion. When the power supply supplies the current to the coil in a predetermined direction, the rotating portion is magnetized to a predetermined polarity and rotates. The stationary member includes a stopper for stopping rotation of the movable member at a predetermined rotational position.

04-30-2009

20090097839

SINGLE-LENS REFLEX CAMERA INCLUDING MIRROR DRIVING DEVICE - A single-lens reflex camera including a mirror driving device comprises: a mirror; a first biasing spring that biases the mirror downward; a drive lever for performing charge drive and a mirror drive; a second biasing spring that biases the drive lever in a mirror up direction; a locking lever that swings around a pivoting shaft on the drive lever; a mirror up and down lever engaged with the locking lever, the mirror up and down lever pivoting with the drive lever to raise the mirror by the second biasing spring against the first biasing spring, the mirror up and down lever releasing the engagement with the locking lever, and the mirror up and down lever pivoting in a direction opposite the direction during the mirror up by the first biasing spring to thereby lower the mirror; a locking spring that engages and biases the locking lever to the mirror up and down lever; and a charge gear that includes a charge abutment that pivots the drive lever in a charge direction against the second biasing spring and a release abutment that releases the engagement between the locking lever and the mirror up and down lever.

04-16-2009

20100322615

POWER TRANSMISSION MECHANISM HAVING CAM -INCORPORATED GEAR, AND POWER TRANSMISSION MECHANISM OF IMAGING APPARATUS - A power transmission mechanism includes a cam-incorporated gear which rotates in one rotational direction by a driving force transmitted from a drive source via a planet gear when engaged with the planet gear, wherein the cam-incorporated gear stops rotating when disengaged from the planet gear; a driven member which includes a follower which contacts at least one surface cam formed on the cam-incorporated gear, the driven member being driven in accordance with the rotation of the cam-incorporated gear in the one rotational direction, and exerting a surplus torque on the cam-incorporated gear in the one rotational direction thereof so as to increase the rotation of the cam-incorporated gear in the one rotational direction, the surplus torque being independent of a torque exerted on the cam-incorporated gear by the drive source; and a damping mechanism which continuously exerts a load torque on the cam-incorporated gear in a rotational direction opposite to the one rotational direction of the cam-incorporated gear so as to cancel out the surplus torque.

12-23-2010

20120269502

CAMERA - A camera including a drive source, where the drive source is driven so that a charge member enters a moving locus of a mirror drive member when driving a mirror from a mirror down position to a mirror up position. After the charge member has entered the moving locus of the mirror drive member, the mirror drive member is moved from the mirror down position to the mirror up position by an urging force of the mirror drive spring.

10-25-2012

20110135294

Mirror retention structure and camera equipped therewith - A mirror retention structure to reduce rebounding of a sub-mirror and to prevent shifting of the mirror-down position. The mirror retention structure includes, a main mirror retention frame that retains a main mirror, a sub-mirror retention frame that retains a sub-mirror and is axially supported at the main mirror retention frame, and a receiving pin that abuts against the sub-mirror retention frame and sets an angle of the sub-mirror at a mirror-down position, wherein the sub-mirror retention frame is provided with a first abutting portion that touches against the receiving pin at the mirror-down position, and a second abutting portion, at a different position from the first abutting portion, that touches against the receiving pin at a position prior to the mirror-down position in a transition from a mirror-up position to the mirror-down position.

06-09-2011

20090208199

Mirror retention structure and camera equipped therewith - Objects of the present invention are to reduce rebounding of a sub-mirror and to prevent shifting of the mirror-down position. The present invention provides a mirror retention structure comprising, a main mirror retention frame that retains a main mirror, a sub-mirror retention frame that retains a sub-mirror and is axially supported at the main mirror retention frame, and a receiving pin that abuts against the sub-mirror retention frame and sets an angle of the sub-mirror at a mirror-down position, wherein the sub-mirror retention frame is provided with, a first abutting portion that touches against the receiving pin at the mirror-down position; and a second abutting portion, at a different position from the first abutting portion, that touches against the receiving pin at a position prior to the mirror-down position in a transition from a mirror-up position to the mirror-down position.

08-20-2009

20110052177

IMAGE SENSING APPARATUS - An image sensing apparatus comprises: a mirror which reflects light coming from a photographing optical system at a mirror down position; a mirror support member which rotatably supports the mirror; a contacting member against which the mirror support member contacts at the mirror down position; a rotatable first lever member; and a second lever member to which the contacting member is secured, and which is rotatably held by the first lever member, wherein when the mirror moves to the mirror down position, the mirror support member contacts against the contacting member, the second lever member then rotates relative to the first lever member and contacts against the first lever member, and by rotating the first lever member, the first and second lever members rotate without changing a relative positional relationship, so as to adjust a position of the contacting member with respect to the mirror support member.

03-03-2011

20100027984

MIRROR DRIVE FOR A CAMERA - Disclosed is a mirror drive for a camera, particularly a medium-size camera, in which both a mirror and an auxiliary shutter have to be swiveled. In order to use a small number of parts for producing said mirror drive and keep the design of the mirror drive uncomplicated, a motor is used which comprises a coil (

02-04-2010

20090097838

MIRROR DEVICE OF SINGLE-LENS REFLEX CAMERA - The mirror device of a single-lens reflex camera according to the present invention includes a main mirror section having a reflecting mirror surface that moves to a first position for reflecting an object beam to an observation optical system and to a second position retracted from the object beam, a sub-mirror section having a reflecting mirror surface located, in conjunction with movement of the main mirror section, at a position apart from the main mirror section when the main mirror section is located at the first position and at a position retracted from the object beam together with the main mirror section when the main mirror section is located at the second position, and a cushioning section interposed between the sub-mirror section and the main mirror section when the main mirror section moves from the first position to the second position.

04-16-2009

20120045195

IMAGE PICKUP APPARATUS HAVING FIRST AND SECOND TIMERS - An image pickup apparatus includes a first timer configured to start measuring a first time period when a mirror located at a mirror-up position is moved to a mirror-down position, a second timer configured to start measuring a second time period when the mirror reaches the mirror-down position, and a controller configured to enable processing when the first timer finishes measuring the first period and the second timer finishes measuring the second period. The first period is a time period enough to attenuate mirror's bounds after the mirror located at the mirror-up position starts moving to the mirror-down position, when a high power-supply voltage is set to the image pickup apparatus, and the second period is a time period enough to attenuate mirror's bounds after the mirror reaches the mirror-down position, when a low power-supply voltage is set to the image pickup apparatus.

02-23-2012

20120141107

SHUTTER DEVICE - When a second cam gear and a first cam gear rotate one turn, a shutter device changes to a first state, a second state, and a third state in this order. In the first state, the second cam gear charges a mirror lever drive spring and a blade drive spring, so that the first cam gear holds the blade lever. In the second state, the second cam gear releases charging of the mirror lever drive spring and charges the blade drive spring, so that the first cam gear releases holding of the blade lever. In the third state, the second cam gear releases charging of the mirror lever drive spring and charging of the blade drive spring, so that the first cam gear releases holding of the blade lever.

06-07-2012

20120141106

SHUTTER DEVICE - A shutter base plate is formed with a first shaft parallel to an optical axis of a photographic light flux, and a drive lever rotates around the first shaft to drive a first blade and a second blade. A mirror lever rotates around a second shaft parallel to the first shaft to drive a main mirror. A second cam gear rotates around a third shaft parallel to the first shaft to charge a mirror lever drive spring and a blade drive spring.

06-07-2012

20100290776

POWER TRANSMISSION MECHANISM HAVING CAM-INCORPORATED GEAR, AND POWER TRANSMISSION MECHANISM OF IMAGING APPARATUS - A power transmission mechanism includes a cam-incorporated gear including a constant-radius cam-portion and a small-radius relief cam-portion connected via a non-constant-radius cam-portion; and first and second swingable members each including a follower which comes in contact with the constant-radius cam-portion and is positioned in an immediate vicinity of the relief cam-portion at respective first and second swing limits. The cam-incorporated gear includes two neutral positions in which one and the other of the swingable members is held at cam-axis separated and vicinity positions, respectively, wherein upon rotating the swingable members from one to the other of the neutral positions, the commencement and termination of rotation of the swingable member that moves from the cam-axis separated to vicinity positions respectively occurs at earlier and later timings. The non-constant-radius cam-portion makes a load torque greater than a surplus torque which act on the cam-incorporated gear when it rotates.

11-18-2010

20100290775

MIRROR AND SHUTTER DRIVE CONTROL MECHANISM FOR IMAGING APPARATUS - An imaging apparatus is provided, including a mirror movable between a viewing position and a retracted position; a shutter which prevents the light that is passed through the imaging optical system from being incident on the image sensor and allows the light that is passed through the imaging optical system to be incident on the image sensor when open and shut, respectively; a reversible motor; a first operating mechanism which moves the mirror and carries out a shutter charge operation when engaged with the reversible motor and driven thereby; a second operating mechanism which carries out the shutter charge operation without moving the mirror when engaged with the reversible motor and driven thereby; and a driving force transmission switcher for transmitting driving forces of the reversible motor in first and second rotational directions thereof to the first and second operating mechanisms, respectively.

11-18-2010

20120230667

MIRROR RETENTION STRUCTURE AND CAMERA EQUIPPED THEREWITH - A mirror retention structure to reduce rebounding of a sub-mirror and to prevent shifting of the mirror-down position. The mirror retention structure includes, a main mirror retention frame that retains a main mirror, a sub-mirror retention frame that retains a sub-mirror and is axially supported at the main mirror retention frame, and a receiving pin that abuts against the sub-mirror retention frame and sets an angle of the sub-mirror at a mirror-down position, wherein the sub-mirror retention frame is provided with a first abutting portion that touches against the receiving pin at the mirror-down position, and a second abutting portion, at a different position from the first abutting portion, that touches against the receiving pin at a position prior to the mirror-down position in a transition from a mirror-up position to the mirror-down position.

09-13-2012

20120257884

CAMERA - A camera includes a first mirror contact member contactable with one side of a mirror, a first rotation member rotated about a first rotation shaft when the first mirror contact member is contacted with one side of the mirror, a second mirror contact member contactable with the other side of the mirror, and a second rotation member rotated about a second rotation shaft when the second mirror contact member is contacted with the other side of the mirror. The first rotation shaft is formed at a position different from a position of the first rotation member where the first mirror contact member is provided. The second rotation shaft is formed at a position different from a position of the second rotation member where the second mirror contact member is provided. The first and second rotation members are arranged such that the first and second rotation shafts are coaxially positioned.

10-11-2012

20120257883

CAMERA - A mirror contact member includes a first eccentric portion that is eccentric with respect to a rotation center of the mirror contact member, and a second eccentric portion that is eccentric with respect to the rotation center of the mirror contact member substantially at the same eccentricity as that of the first eccentric portion. When a mirror is displaced to a mirror-down state, the mirror is contacted with the first eccentric portion. A bounce regulation member is disposed to be rotatable about the second eccentric portion.

10-11-2012

20150010297

DRIVE MECHANISM FOR MOVABLE MIRROR OF CAMERA - A movable-mirror drive mechanism of a camera includes a main mirror held by a main-mirror holding frame rotatable between a viewfinder light-guiding position and a retracted position; a sub-mirror held by a sub-mirror holding frame that is rotatably supported by the main-mirror holding frame, wherein the sub-mirror holding frame is positioned in a jutting-out position when the main mirror is in the viewfinder light-guiding position, and the sub-mirror holding frame is retracted with the main mirror when the main mirror is in the retracted position; and a vibration control member which rotates in association with rotation of the main-mirror holding frame and holds the sub-mirror holding frame in the jutting-out position to prevent the sub-mirror holding frame from rotating toward the sub-mirror retracted position when the main mirror rotates to the viewfinder light-guiding position.

01-08-2015

20140072291

SHOCK-ABSORBING MECHANISM FOR MOVABLE MIRROR OF CAMERA - A movable mirror shock-absorbing mechanism of a camera is provided and includes a movable mirror rotatable between a viewfinder light-guiding position and a retracted position, a first shock-absorbing member which comes into contact with, and is pressed and moved by, the movable mirror when the movable mirror rotates between the retracted position and the viewfinder light-guiding position, and a second shock-absorbing member which supports the first shock-absorbing member in a manner to allow the first shock-absorbing member to move relative to the second shock-absorbing member, and when the movable mirror rotates, firstly the second shock-absorbing member moves the first shock-absorbing member solely in a pressing-moving direction in which the first shock-absorbing member is pressed and moved by the movable mirror, and subsequently the second shock-absorbing member is moved with the first shock-absorbing member in the pressing-moving direction.

03-13-2014

20110158632

MIRROR BRAKE MECHANISM OF AN SLR CAMERA - A mirror brake mechanism of an SLR camera for applying a brake to a mirror pivoted about a mirror rotational shaft to be swingable between a viewing position and a retracted position. The mirror brake mechanism includes a brake shaft which is independent of the mirror rotational shaft and positionally aligned along an extension line of the mirror rotational shaft; an interlocking rotating member disposed on one of laterally opposite sides of the mirror and rotatable about the brake shaft; a mirror drive shaft which connects a mirror seat, on which the mirror is mounted, and the interlocking rotating member to each other in a rotational direction about the mirror drive shaft; a brake drum which rotates in association with the interlocking rotating member; and a mirror brake member which is brought into contact with and disengaged from the brake drum.

06-30-2011

20110158631

MIRROR DRIVE APPARATUS INCORPORATING A BRAKE MECHANISM OF AN SLR CAMERA - A mirror drive apparatus incorporating a brake mechanism of an SLR camera includes a mirror pivoted about a mirror rotational shaft and swingable between a viewing position and a retracted position, wherein the mirror is biased to swing from the viewing position to the retracted position; a brake drum which rotates in association with a swing movement of the mirror; a mirror brake member including a brake shoe which is brought into contact with and disengaged from the brake drum; a mirror control cam driven by a motor to return the mirror, which is biased to swing from the viewing position to the retracted position, to the viewing position from the retracted position; and a brake lever control mechanism which makes the brake shoe contact the brake drum and moves the brake shoe off the brake drum by a rotating operation of the mirror control cam.

CAMERA - A camera includes a positioning member arranged to determine a mirror-down position of a mirror holder, a rotating member rotatably mounted to the positioning member, and an urging member arranged to urge the rotating member. The mirror holder includes a cam portion. The rotating member includes a follower portion arranged to be able to trace the cam portion. When the mirror holder is at the mirror-down position, the follower portion traces a first region of the cam portion to urge the mirror holder toward the mirror-down position by an urging force of the urging member. When the mirror holder is at the mirror-up position, the follower portion traces a second region of the cam portion to urge the mirror holder toward the mirror-up position by the urging force of the urging member.

08-08-2013

20130202284

CAMERA - A mirror holder includes a cam portion, and a rotating member includes a follower portion arranged to be able to trace the cam portion. When the mirror holder is at a mirror-down position, the follower portion traces a first region of the cam portion to urge the mirror holder toward the mirror-down position by an urging force of an urging member. When the mirror holder is at a mirror-up position, the follower portion traces a second region of the cam portion to urge the mirror holder toward the mirror-up position by the urging force of the urging member. When the mirror holder is at an intermediate position between the mirror-down position and the mirror-up position, a contact portion is contacted with an edge of a hole by the urging force of the urging member.

08-08-2013

20130209084

CAMERA - When a mirror holder is at a mirror-down position, a follower portion traces a first region of a cam portion to urge the mirror holder toward the mirror-down position by an urging force of an urging member. When the mirror holder is at a mirror-up position, the follower portion traces a second region of the cam portion to urge the mirror holder toward the mirror-up position by the urging force of the urging member. When the mirror holder is at an intermediate position between the mirror-down position and the mirror-up position, a contact portion is contacted with one edge of a hole by the urging force of the urging member. When the mirror holder is bounced near the mirror-down position or near the mirror-up position, the contact portion is contacted with an opposite edge of the hole against the urging force of the urging member.